Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
In initial operation of a new flowsheet for recovery of highly irradiated enriched uranium by solvent extraction with 7.5 vol percent tri-n-butyl phosphate, valence adjustment of plutonium and neptunium with ferrous sulfamate was ineffective; plutonium was not rejected as desired, and neptunium was partially lost to waste. Laboratory studies demonstrated that ferrous sulfamate, added to both the aqueous feed solution and the aqueous scrub stream in the first stage (IAS), was largely destroyed during the relatively long time between preparation and use of these solutions. Radiolysis destroyed the ferrous ion in the feed in a few hours, and nitric acid oxidized much of the ferrous ion in the scrub solution. To achieve the desired neptunium-plutonium separation in plant operation, the process flowsheet was modified as follows: ferrous sulfamate is added to the IAS stream immediately before it enters the mixer-settler, and ferrous fulfamate is not added to the feed solution where it would be destroyed by radiolysis.
Neptunium and Plutonium Valence Adjustment in Enriched Uranium Processing
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
In initial operation of a new flowsheet for recovery of highly irradiated enriched uranium by solvent extraction with 7.5 vol percent tri-n-butyl phosphate, valence adjustment of plutonium and neptunium with ferrous sulfamate was ineffective; plutonium was not rejected as desired, and neptunium was partially lost to waste. Laboratory studies demonstrated that ferrous sulfamate, added to both the aqueous feed solution and the aqueous scrub stream in the first stage (IAS), was largely destroyed during the relatively long time between preparation and use of these solutions. Radiolysis destroyed the ferrous ion in the feed in a few hours, and nitric acid oxidized much of the ferrous ion in the scrub solution. To achieve the desired neptunium-plutonium separation in plant operation, the process flowsheet was modified as follows: ferrous sulfamate is added to the IAS stream immediately before it enters the mixer-settler, and ferrous fulfamate is not added to the feed solution where it would be destroyed by radiolysis.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
In initial operation of a new flowsheet for recovery of highly irradiated enriched uranium by solvent extraction with 7.5 vol percent tri-n-butyl phosphate, valence adjustment of plutonium and neptunium with ferrous sulfamate was ineffective; plutonium was not rejected as desired, and neptunium was partially lost to waste. Laboratory studies demonstrated that ferrous sulfamate, added to both the aqueous feed solution and the aqueous scrub stream in the first stage (IAS), was largely destroyed during the relatively long time between preparation and use of these solutions. Radiolysis destroyed the ferrous ion in the feed in a few hours, and nitric acid oxidized much of the ferrous ion in the scrub solution. To achieve the desired neptunium-plutonium separation in plant operation, the process flowsheet was modified as follows: ferrous sulfamate is added to the IAS stream immediately before it enters the mixer-settler, and ferrous fulfamate is not added to the feed solution where it would be destroyed by radiolysis.
Valence State Distributions of Uranium, Neptunium, and Plutonium in Acid Solutions
Separation of Uranium, Neptunium, and Plutonium from Enriched Uranium-fission Product Mixtures with Specific Application to Analytical Procedures
Author: William John Maeck
Publisher:
ISBN:
Category : Radioactive substances
Languages : en
Pages : 98
Book Description
Publisher:
ISBN:
Category : Radioactive substances
Languages : en
Pages : 98
Book Description
Neptunium-237; Production and Recovery
Author: Wallace W. Schulz
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 100
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 100
Book Description
ERDA Energy Research Abstracts
Author: United States. Energy Research and Development Administration
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1314
Book Description
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1314
Book Description
Industrial Criticality Measurements on Enriched Uranium and Plutonium
Author: C. L. Schuske
Publisher:
ISBN:
Category : Criticality (Nuclear engineering)
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category : Criticality (Nuclear engineering)
Languages : en
Pages : 24
Book Description
ERDA Energy Research Abstracts
Author: United States. Energy Research and Development Administration. Technical Information Center
Publisher:
ISBN:
Category : Force and energy
Languages : en
Pages : 588
Book Description
Publisher:
ISBN:
Category : Force and energy
Languages : en
Pages : 588
Book Description
Self-sustaining Plutonium Recycle in Sodium Graphite Reactors
Author: T. J. Connolly
Publisher:
ISBN:
Category : Plutonium
Languages : en
Pages : 50
Book Description
Publisher:
ISBN:
Category : Plutonium
Languages : en
Pages : 50
Book Description
Update on the Chemical Thermodynamics of Uranium, Neptunium, Plutonium, Americium and Technetium
Author: R. Guillaumont
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 976
Book Description
This volume is part of the series on "Chemical Thermodynamics", published under the aegis of the OECD Nuclear Energy Agency, and updates and expands the thermodynamic data on inorganic compounds and complexes of uranium, neptunium, plutonium, americium and technetium contained in the previous volumes of the series. A review team, composed of seven internationally recognized experts, has critically reviewed during five years all the scientific literature containing chemical thermodynamic information for the above mentioned systems that has appeared since the publication of the earlier volumes. The results of this critical review carried out following the Guidelines of the OECD NEA Thermochemical Database Project have been documented in the present volume, which contains new tables of selected values for formation and reaction thermodynamical properties and an extensive bibliography.
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 976
Book Description
This volume is part of the series on "Chemical Thermodynamics", published under the aegis of the OECD Nuclear Energy Agency, and updates and expands the thermodynamic data on inorganic compounds and complexes of uranium, neptunium, plutonium, americium and technetium contained in the previous volumes of the series. A review team, composed of seven internationally recognized experts, has critically reviewed during five years all the scientific literature containing chemical thermodynamic information for the above mentioned systems that has appeared since the publication of the earlier volumes. The results of this critical review carried out following the Guidelines of the OECD NEA Thermochemical Database Project have been documented in the present volume, which contains new tables of selected values for formation and reaction thermodynamical properties and an extensive bibliography.